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author | Wim <wim@42.be> | 2016-04-10 23:39:38 +0200 |
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committer | Wim <wim@42.be> | 2016-04-10 23:39:38 +0200 |
commit | de4c7804101a47a01d0c9b88ea34d2b153e2b6b9 (patch) | |
tree | fa379bc2e706951a913e0c7009d9906e42363655 /vendor/github.com/pborman/uuid/version1.go | |
parent | 6b18257185b1830bd2eff83fae30bdd2055f78b0 (diff) | |
download | matterbridge-msglm-de4c7804101a47a01d0c9b88ea34d2b153e2b6b9.tar.gz matterbridge-msglm-de4c7804101a47a01d0c9b88ea34d2b153e2b6b9.tar.bz2 matterbridge-msglm-de4c7804101a47a01d0c9b88ea34d2b153e2b6b9.zip |
Vendor libs
Diffstat (limited to 'vendor/github.com/pborman/uuid/version1.go')
-rw-r--r-- | vendor/github.com/pborman/uuid/version1.go | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/vendor/github.com/pborman/uuid/version1.go b/vendor/github.com/pborman/uuid/version1.go new file mode 100644 index 00000000..0127eacf --- /dev/null +++ b/vendor/github.com/pborman/uuid/version1.go @@ -0,0 +1,41 @@ +// Copyright 2011 Google Inc. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package uuid + +import ( + "encoding/binary" +) + +// NewUUID returns a Version 1 UUID based on the current NodeID and clock +// sequence, and the current time. If the NodeID has not been set by SetNodeID +// or SetNodeInterface then it will be set automatically. If the NodeID cannot +// be set NewUUID returns nil. If clock sequence has not been set by +// SetClockSequence then it will be set automatically. If GetTime fails to +// return the current NewUUID returns nil. +func NewUUID() UUID { + if nodeID == nil { + SetNodeInterface("") + } + + now, seq, err := GetTime() + if err != nil { + return nil + } + + uuid := make([]byte, 16) + + time_low := uint32(now & 0xffffffff) + time_mid := uint16((now >> 32) & 0xffff) + time_hi := uint16((now >> 48) & 0x0fff) + time_hi |= 0x1000 // Version 1 + + binary.BigEndian.PutUint32(uuid[0:], time_low) + binary.BigEndian.PutUint16(uuid[4:], time_mid) + binary.BigEndian.PutUint16(uuid[6:], time_hi) + binary.BigEndian.PutUint16(uuid[8:], seq) + copy(uuid[10:], nodeID) + + return uuid +} |